Modern GPU and CPU underutilized by viewer, resulting in poor framerate and sometimes freezes

[canny]

The freezes are especially annoying with vehicles. Some places can cause rendering to stop for most of a second as you move near them.

Specs:

• CPU: Intel(R) Core(TM) Ultra 9 185H (3072 MHz)

• Memory: 65015 MB

• OS Version: Microsoft Windows 11 64-bit

• Graphics Card: NVIDIA GeForce RTX 4070 Laptop GPU/PCIe/SSE2

• Maximum bandwidth setting: 8,000 kbps

Test 1: Standing still

• Draw distance: 512

• Position: NE Albion, looking west towards Abbotts

• Framerate: Stabilizes around 11FPS

• CPU: ~11%

• GPU: ~18%

Test 2: Flying unassisted: Albion - Yamato

• Draw distance: 512

• Framerate: Varies between 4-8FPS

• CPU: ~20-30%, occasional spikes to 49%, depending on object density

• GPU: ~18%

https://secondlife.canny.io/admin/feedback/feature-requests/p/modern-gpu-and-cpu-underutilized-by-viewer-resulting-in-poor-framerate-and-somet

Test plan

Test 1: Standing still

• Set Draw distance: 512

• Position: NE Albion, looking west towards Abbotts
  What is the exact position?

• Verify framerate is higher in 26.3 than in 26.2

Test 2: Flying unassisted: Albion - Yamato

• Set Draw distance: 512

• Fly from position:

• To position
  Does flying unassisted mean flying your avatar straight by pressing the up arrow key?

• Verify framerate is higher in 26.3 than in 26.2

• Verify there is less stalling in 26.3 than in 26.2

Test 3:

• Verify a multi-gpu setup selects the right gpu.

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[canny]

This issue has been linked to a Canny post: Modern GPU and CPU underutilized by viewer, resulting in poor framerate and sometimes freezes 🎉

[kylelinden]

Let's use this issue to track the upcoming performance efforts slated for 26.3

[Ansariel]

Ironically the same people reporting this because the viewer is performing bad on their system are most likely the same that will report about high CPU/GPU usage, high temperatures and loud fan noises afterwards... 🤷